/*
 * Copyright (c) 2015 Typelevel
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package cats
package syntax

import cats.evidence.===

trait DistributiveSyntax extends Distributive.ToDistributiveOps {
  implicit final def catsSyntaxDistributiveOps[F[_]: Functor, A](fa: F[A]): DistributiveOps[F, A] =
    new DistributiveOps[F, A](fa)
}

// Add syntax to functor as part of importing distributive syntax.
final class DistributiveOps[F[_], A](private val fa: F[A]) extends AnyVal {
  def distribute[G[_], B](f: A => G[B])(implicit G: Distributive[G], F: Functor[F]): G[F[B]] = G.distribute(fa)(f)
  def cosequence[G[_], B](implicit G: Distributive[G], F: Functor[F], ev: A === G[B]): G[F[B]] =
    G.cosequence(ev.substitute(fa))
}
